Lv.1ジャージ

🤖質問する

<script>
  function solution(n, lost, reserve) {
      var answer = 0;
      lost.sort();
      reserve.sort();
      let reserveCopy = [...reserve];
      let doublePerson = [];

      answer = n - lost.length;
      reserve.forEach(function(val, idx) {
          if (lost.indexOf(val) > -1) {
              console.log(val)
              answer++;
              lost.splice(lost.indexOf(val), 1);
              doublePerson.push(val);
          }
      })

      reserve = reserve.filter(item => !doublePerson.includes(item));

      reserve.forEach(function(val, idx) {
          if (lost.indexOf(val-1) > -1) {
              answer++;
              lost.splice(lost.indexOf(val-1), 1);
          } else if (lost.indexOf(val+1) > -1) {
              answer++;
              lost.splice(lost.indexOf(val+1),1);
          }
      })
      return answer;
  }
</script>